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<div class="header">
  <div class="headertitle">
<div class="title">/data/users/matthijs/github_faiss/faiss/AutoTune.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">/* Copyright 2004-present Facebook. All Rights Reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">   implementation of Hyper-parameter auto-tuning</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;</div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor">#include &quot;AutoTune.h&quot;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;</div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#include &quot;FaissAssert.h&quot;</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &quot;utils.h&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &quot;IndexFlat.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#include &quot;VectorTransform.h&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &quot;IndexLSH.h&quot;</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#include &quot;IndexPQ.h&quot;</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &quot;IndexIVF.h&quot;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &quot;IndexIVFPQ.h&quot;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &quot;IndexIVFFlat.h&quot;</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &quot;MetaIndexes.h&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#include &quot;IndexScalarQuantizer.h&quot;</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &quot;IndexHNSW.h&quot;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="line" href="namespacefaiss.html">   30</a></span>&#160;<span class="keyword">namespace </span>faiss {</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;AutoTuneCriterion::AutoTuneCriterion (idx_t nq, idx_t nnn):</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    nq (nq), nnn (nnn), gt_nnn (0)</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;{}</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="structfaiss_1_1AutoTuneCriterion.html#a174f0de8e6fd01905f5fa2170f5039d8">   38</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a174f0de8e6fd01905f5fa2170f5039d8">AutoTuneCriterion::set_groundtruth</a> (</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;     <span class="keywordtype">int</span> gt_nnn, <span class="keyword">const</span> <span class="keywordtype">float</span> *gt_D_in, <span class="keyword">const</span> idx_t *gt_I_in)</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;{</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;    this-&gt;gt_nnn = <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9b3a2242729a0873d255c1684881bbd4">gt_nnn</a>;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;    <span class="keywordflow">if</span> (gt_D_in) { <span class="comment">// allow null for this, as it is often not used</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;        <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a40e91caa9232a597c16fc946d0befd9b">gt_D</a>.resize (nq * gt_nnn);</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;        memcpy (<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a40e91caa9232a597c16fc946d0befd9b">gt_D</a>.data(), gt_D_in, <span class="keyword">sizeof</span> (<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a40e91caa9232a597c16fc946d0befd9b">gt_D</a>[0]) * nq * gt_nnn);</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    }</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">gt_I</a>.resize (nq * gt_nnn);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    memcpy (<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">gt_I</a>.data(), gt_I_in, <span class="keyword">sizeof</span> (<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">gt_I</a>[0]) * nq * gt_nnn);</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;}</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;OneRecallAtRCriterion::OneRecallAtRCriterion (idx_t nq, idx_t R):</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;    <a class="code" href="structfaiss_1_1AutoTuneCriterion.html">AutoTuneCriterion</a>(nq, R), R(R)</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;{}</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="structfaiss_1_1OneRecallAtRCriterion.html#afe472c2ae38534c293b02feebf87988d">   56</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="structfaiss_1_1OneRecallAtRCriterion.html#afe472c2ae38534c293b02feebf87988d">OneRecallAtRCriterion::evaluate</a>(<span class="keyword">const</span> <span class="keywordtype">float</span>* <span class="comment">/*D*/</span>, <span class="keyword">const</span> idx_t* I)<span class="keyword"></span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="keyword">    const </span>{</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;  FAISS_THROW_IF_NOT_MSG(</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;      (<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">gt_I</a>.size() == <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9b3a2242729a0873d255c1684881bbd4">gt_nnn</a> * nq &amp;&amp; <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9b3a2242729a0873d255c1684881bbd4">gt_nnn</a> &gt;= 1 &amp;&amp; nnn &gt;= R),</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;      <span class="stringliteral">&quot;ground truth not initialized&quot;</span>);</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;  idx_t n_ok = 0;</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;  <span class="keywordflow">for</span> (idx_t q = 0; q &lt; <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#adcfaafb3f1b3449e2cfd553f0f603a5b">nq</a>; q++) {</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    idx_t gt_nn = <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">gt_I</a>[q * <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9b3a2242729a0873d255c1684881bbd4">gt_nnn</a>];</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    <span class="keyword">const</span> idx_t* I_line = I + q * <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; R; i++) {</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;      <span class="keywordflow">if</span> (I_line[i] == gt_nn) {</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        n_ok++;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;      }</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    }</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  }</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;  <span class="keywordflow">return</span> n_ok / double(nq);</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;}</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;IntersectionCriterion::IntersectionCriterion (idx_t nq, idx_t R):</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;    <a class="code" href="structfaiss_1_1AutoTuneCriterion.html">AutoTuneCriterion</a>(nq, R), R(R)</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;{}</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div>
<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="structfaiss_1_1IntersectionCriterion.html#a6f7aef25852931b22298f7bb4c358791">   80</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="structfaiss_1_1IntersectionCriterion.html#a6f7aef25852931b22298f7bb4c358791">IntersectionCriterion::evaluate</a>(<span class="keyword">const</span> <span class="keywordtype">float</span>* <span class="comment">/*D*/</span>, <span class="keyword">const</span> idx_t* I)<span class="keyword"></span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="keyword">    const </span>{</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;    FAISS_THROW_IF_NOT_MSG(</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;      (<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">gt_I</a>.size() == <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9b3a2242729a0873d255c1684881bbd4">gt_nnn</a> * nq &amp;&amp; <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9b3a2242729a0873d255c1684881bbd4">gt_nnn</a> &gt;= R &amp;&amp; nnn &gt;= R),</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;      <span class="stringliteral">&quot;ground truth not initialized&quot;</span>);</div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;    <span class="keywordtype">long</span> n_ok = 0;</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="preprocessor">#pragma omp parallel for reduction(+: n_ok)</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="preprocessor"></span>    <span class="keywordflow">for</span> (idx_t q = 0; q &lt; <a class="code" href="structfaiss_1_1AutoTuneCriterion.html#adcfaafb3f1b3449e2cfd553f0f603a5b">nq</a>; q++) {</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        n_ok += <a class="code" href="namespacefaiss.html#a8dbc652ba48d41f126b8815004899448">ranklist_intersection_size</a> (</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;             R, &amp;<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">gt_I</a> [q * gt_nnn],</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;             R, I + q * nnn);</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    }</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;    <span class="keywordflow">return</span> n_ok / double (nq * R);</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;}</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment">/***************************************************************</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment"> * OperatingPoints</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment"> ***************************************************************/</span></div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;OperatingPoints::OperatingPoints ()</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;{</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    <a class="code" href="structfaiss_1_1OperatingPoints.html#a1702eeb680ce73ca8c1fd071955f0679">clear</a>();</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;}</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="structfaiss_1_1OperatingPoints.html#a1702eeb680ce73ca8c1fd071955f0679">  104</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1OperatingPoints.html#a1702eeb680ce73ca8c1fd071955f0679">OperatingPoints::clear</a> ()</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;{</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    <a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>.clear();</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>.clear();<span class="comment"></span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">    /// default point: doing nothing gives 0 performance and takes 0 time</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment"></span>    <a class="code" href="structfaiss_1_1OperatingPoint.html">OperatingPoint</a> op = {0, 0, <span class="stringliteral">&quot;&quot;</span>, -1};</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>.push_back(op);</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;}</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment">/// add a performance measure</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="structfaiss_1_1OperatingPoints.html#a7afabe0576800255eeec680486cb30df">  114</a></span>&#160;<span class="comment"></span><span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1OperatingPoints.html#a7afabe0576800255eeec680486cb30df">OperatingPoints::add</a> (<span class="keywordtype">double</span> perf, <span class="keywordtype">double</span> t, <span class="keyword">const</span> std::string &amp; key,</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;                           <span class="keywordtype">size_t</span> cno)</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;{</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <a class="code" href="structfaiss_1_1OperatingPoint.html">OperatingPoint</a> op = {perf, t, key, long(cno)};</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;    <a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>.push_back (op);</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    <span class="keywordflow">if</span> (perf == 0) {</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;  <span class="comment">// no method for 0 accuracy is faster than doing nothing</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;    }</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;    std::vector&lt;OperatingPoint&gt; &amp; a = <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    <span class="keywordflow">if</span> (perf &gt; a.back().perf) {</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        <span class="comment">// keep unconditionally</span></div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        a.push_back (op);</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (perf == a.back().perf) {</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        <span class="keywordflow">if</span> (t &lt; a.back ().t) {</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;            a.back() = op;</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;        }</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        <span class="keywordtype">int</span> i;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        <span class="comment">// stricto sensu this should be a bissection</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        <span class="keywordflow">for</span> (i = 0; i &lt; a.size(); i++) {</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            <span class="keywordflow">if</span> (a[i].perf &gt;= perf) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;        }</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        assert (i &lt; a.size());</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;        <span class="keywordflow">if</span> (t &lt; a[i].t) {</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;            <span class="keywordflow">if</span> (a[i].perf == perf) {</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;                a[i] = op;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;                a.insert (a.begin() + i, op);</div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;            }</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;        }</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;    }</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    { <span class="comment">// remove non-optimal points from array</span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;        <span class="keywordtype">int</span> i = a.size() - 1;</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        <span class="keywordflow">while</span> (i &gt; 0) {</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;            <span class="keywordflow">if</span> (a[i].t &lt; a[i - 1].t)</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;                a.erase (a.begin() + (i - 1));</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            i--;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;        }</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    }</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;}</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div>
<div class="line"><a name="l00161"></a><span class="lineno"><a class="line" href="structfaiss_1_1OperatingPoints.html#a84baddccd8b803dee460739f8bcbc0c9">  161</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="structfaiss_1_1OperatingPoints.html#a84baddccd8b803dee460739f8bcbc0c9">OperatingPoints::merge_with</a> (<span class="keyword">const</span> <a class="code" href="structfaiss_1_1OperatingPoints.html">OperatingPoints</a> &amp;other,</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;                                 <span class="keyword">const</span> std::string &amp; prefix)</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;{</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <span class="keywordtype">int</span> n_add = 0;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; other.<a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>.size(); i++) {</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1OperatingPoint.html">OperatingPoint</a> &amp; op = other.<a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>[i];</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1OperatingPoints.html#a7afabe0576800255eeec680486cb30df">add</a> (op.<a class="code" href="structfaiss_1_1OperatingPoint.html#ad218d1641b6e32d043a215542485a457">perf</a>, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a886492ffe2b337539fadc798c8f4a6a8">t</a>, prefix + op.<a class="code" href="structfaiss_1_1OperatingPoint.html#aa13782d6d26168531764cb64da941ced">key</a>, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a2c023f1484e4748e3e97681bb1f4b78e">cno</a>))</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;            n_add++;</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;    }</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;    <span class="keywordflow">return</span> n_add;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;}</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;<span class="comment">/// get time required to obtain a given performance measure</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"><a class="line" href="structfaiss_1_1OperatingPoints.html#a3a0723e0900f7048ac9567341de5ee56">  176</a></span>&#160;<span class="comment"></span><span class="keywordtype">double</span> <a class="code" href="structfaiss_1_1OperatingPoints.html#a3a0723e0900f7048ac9567341de5ee56">OperatingPoints::t_for_perf</a> (<span class="keywordtype">double</span> perf)<span class="keyword"> const</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keyword">const</span> std::vector&lt;OperatingPoint&gt; &amp; a = <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordflow">if</span> (perf &gt; a.back().perf) <span class="keywordflow">return</span> 1e50;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;    <span class="keywordtype">int</span> i0 = -1, i1 = a.size() - 1;</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;    <span class="keywordflow">while</span> (i0 + 1 &lt; i1) {</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;        <span class="keywordtype">int</span> imed = (i0 + i1 + 1) / 2;</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        <span class="keywordflow">if</span> (a[imed].perf &lt; perf) i0 = imed;</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;        <span class="keywordflow">else</span>                     i1 = imed;</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    }</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;    <span class="keywordflow">return</span> a[i1].t;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;}</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div>
<div class="line"><a name="l00190"></a><span class="lineno"><a class="line" href="structfaiss_1_1OperatingPoints.html#a84e6a4d2f595982b9d900c8585424f9b">  190</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1OperatingPoints.html#a84e6a4d2f595982b9d900c8585424f9b">OperatingPoints::all_to_gnuplot</a> (<span class="keyword">const</span> <span class="keywordtype">char</span> *fname)<span class="keyword"> const</span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;    FILE *f = fopen(fname, <span class="stringliteral">&quot;w&quot;</span>);</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    <span class="keywordflow">if</span> (!f) {</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;        fprintf (stderr, <span class="stringliteral">&quot;cannot open %s&quot;</span>, fname);</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;        perror(<span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;        abort();</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;    }</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>.size(); i++) {</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1OperatingPoint.html">OperatingPoint</a> &amp; op = <a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>[i];</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        fprintf (f, <span class="stringliteral">&quot;%g %g %s\n&quot;</span>, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#ad218d1641b6e32d043a215542485a457">perf</a>, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a886492ffe2b337539fadc798c8f4a6a8">t</a>, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#aa13782d6d26168531764cb64da941ced">key</a>.c_str());</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;    }</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;    fclose(f);</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;}</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="keywordtype">void</span> OperatingPoints::optimal_to_gnuplot (<span class="keyword">const</span> <span class="keywordtype">char</span> *fname)<span class="keyword"> const</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;    FILE *f = fopen(fname, <span class="stringliteral">&quot;w&quot;</span>);</div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;    <span class="keywordflow">if</span> (!f) {</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;        fprintf (stderr, <span class="stringliteral">&quot;cannot open %s&quot;</span>, fname);</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        perror(<span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;        abort();</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;    }</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;    <span class="keywordtype">double</span> prev_perf = 0.0;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>.size(); i++) {</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;        <span class="keyword">const</span> OperatingPoint &amp; op = <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>[i];</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;        fprintf (f, <span class="stringliteral">&quot;%g %g\n&quot;</span>, prev_perf, op.t);</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        fprintf (f, <span class="stringliteral">&quot;%g %g %s\n&quot;</span>, op.perf, op.t, op.key.c_str());</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;        prev_perf = op.perf;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    }</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;    fclose(f);</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;}</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;</div>
<div class="line"><a name="l00223"></a><span class="lineno"><a class="line" href="structfaiss_1_1OperatingPoints.html#ab146ed35f0c8f0c48983a054337a98e1">  223</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1OperatingPoints.html#ab146ed35f0c8f0c48983a054337a98e1">OperatingPoints::display</a> (<span class="keywordtype">bool</span> only_optimal)<span class="keyword"> const</span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    <span class="keyword">const</span> std::vector&lt;OperatingPoint&gt; &amp;pts =</div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;        only_optimal ? <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a> : <a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>;</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    printf(<span class="stringliteral">&quot;Tested %ld operating points, %ld ones are optimal:\n&quot;</span>,</div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;           <a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>.size(), <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>.size());</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; pts.size(); i++) {</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1OperatingPoint.html">OperatingPoint</a> &amp; op = pts[i];</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">char</span> *star = <span class="stringliteral">&quot;&quot;</span>;</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;        <span class="keywordflow">if</span> (!only_optimal) {</div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>.size(); j++) {</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;                <span class="keywordflow">if</span> (op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a2c023f1484e4748e3e97681bb1f4b78e">cno</a> == <a class="code" href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">optimal_pts</a>[j].cno) {</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;                    star = <span class="stringliteral">&quot;*&quot;</span>;</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;                    <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                }</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;            }</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;        }</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;        printf (<span class="stringliteral">&quot;cno=%ld key=%s perf=%.4f t=%.3f %s\n&quot;</span>,</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;                op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a2c023f1484e4748e3e97681bb1f4b78e">cno</a>, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#aa13782d6d26168531764cb64da941ced">key</a>.c_str(), op.<a class="code" href="structfaiss_1_1OperatingPoint.html#ad218d1641b6e32d043a215542485a457">perf</a>, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a886492ffe2b337539fadc798c8f4a6a8">t</a>, star);</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;    }</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;}</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="comment">/***************************************************************</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="comment"> * ParameterSpace</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="comment"> ***************************************************************/</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;ParameterSpace::ParameterSpace ():</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;    verbose (1), n_experiments (500),</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;    batchsize (1&lt;&lt;30), thread_over_batches (false)</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;{</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;}</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="comment">/* not keeping this constructor as inheritors will call the parent</span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="comment">   initialize()</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;<span class="preprocessor">#if 0</span></div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;<span class="preprocessor"></span>ParameterSpace::ParameterSpace (Index *index):</div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;    verbose (1), n_experiments (500),</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    batchsize (1&lt;&lt;30), thread_over_batches (false)</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;{</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;    initialize(index);</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;}</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00270"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#a488329e3c1f08b9980d8e0f9c1491c75">  270</a></span>&#160;<span class="keywordtype">size_t</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#a488329e3c1f08b9980d8e0f9c1491c75">ParameterSpace::n_combinations</a> ()<span class="keyword"> const</span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;    <span class="keywordtype">size_t</span> n = 1;</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>.size(); i++)</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;        n *= <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>[i].values.size();</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    <span class="keywordflow">return</span> n;</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;}</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="comment">/// get string representation of the combination</span></div>
<div class="line"><a name="l00279"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#a7bb416dbab456bb1ecd9ace433fa5312">  279</a></span>&#160;<span class="comment"></span>std::string <a class="code" href="structfaiss_1_1ParameterSpace.html#a7bb416dbab456bb1ecd9ace433fa5312">ParameterSpace::combination_name</a> (<span class="keywordtype">size_t</span> cno)<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    <span class="keywordtype">char</span> buf[1000], *wp = buf;</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    *wp = 0;</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>.size(); i++) {</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>[i];</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;        <span class="keywordtype">size_t</span> j = cno % pr.values.size();</div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;        cno /= pr.values.size();</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;        wp += snprintf (</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;              wp, buf + 1000 - wp, <span class="stringliteral">&quot;%s%s=%g&quot;</span>, i == 0 ? <span class="stringliteral">&quot;&quot;</span> : <span class="stringliteral">&quot;,&quot;</span>,</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;              pr.name.c_str(), pr.values[j]);</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;    }</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;    <span class="keywordflow">return</span> std::string (buf);</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;}</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;</div>
<div class="line"><a name="l00294"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#a7cdedaf4bab33293771c4267d453a950">  294</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#a7cdedaf4bab33293771c4267d453a950">ParameterSpace::combination_ge</a> (<span class="keywordtype">size_t</span> c1, <span class="keywordtype">size_t</span> c2)<span class="keyword"> const</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>.size(); i++) {</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        <span class="keywordtype">int</span> nval = <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>[i].values.size();</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        <span class="keywordtype">size_t</span> j1 = c1 % nval;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        <span class="keywordtype">size_t</span> j2 = c2 % nval;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;        <span class="keywordflow">if</span> (!(j1 &gt;= j2)) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;        c1 /= nval;</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;        c2 /= nval;</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;    }</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;}</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;</div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="preprocessor">#define DC(classname) \</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;<span class="preprocessor">    const classname *ix = dynamic_cast&lt;const classname *&gt;(index)</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;<span class="keyword">static</span> <span class="keywordtype">void</span> init_pq_ParameterRange (<span class="keyword">const</span> <a class="code" href="structfaiss_1_1ProductQuantizer.html">ProductQuantizer</a> &amp; pq,</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;                                    <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr)</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;{</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;    <span class="keywordflow">if</span> (pq.<a class="code" href="structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9">code_size</a> % 4 == 0) {</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;        <span class="comment">// Polysemous not supported for code sizes that are not a</span></div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;        <span class="comment">// multiple of 4</span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 2; i &lt;= pq.<a class="code" href="structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9">code_size</a> * 8 / 2; i+= 2)</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;            pr.values.push_back(i);</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;    }</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;    pr.values.push_back (pq.<a class="code" href="structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9">code_size</a> * 8);</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;}</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;</div>
<div class="line"><a name="l00324"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">  324</a></span>&#160;<a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp;<a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">ParameterSpace::add_range</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> * name)</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;{</div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;    <span class="keywordflow">for</span> (<span class="keyword">auto</span> &amp; pr : <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>) {</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;        <span class="keywordflow">if</span> (pr.name == name) {</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;            <span class="keywordflow">return</span> pr;</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;        }</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;    }</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;    parameter_ranges.push_back (<a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> ());</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;    parameter_ranges.back ().name = name;</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;    <span class="keywordflow">return</span> parameter_ranges.back ();</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;}</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;<span class="comment">/// initialize with reasonable parameters for the index</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#a9304975f379738eda384385eace8ad76">  338</a></span>&#160;<span class="comment"></span><span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#a9304975f379738eda384385eace8ad76">ParameterSpace::initialize</a> (<span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html">Index</a> * index)</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;{</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexPreTransform.html">IndexPreTransform</a>)) {</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;        index = ix-&gt;index;</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    }</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexRefineFlat.html">IndexRefineFlat</a>)) {</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;        <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;k_factor_rf&quot;</span>);</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt;= 6; i++) {</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;            pr.values.push_back (1 &lt;&lt; i);</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;        }</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;        index = ix-&gt;base_index;</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;    }</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexPreTransform.html">IndexPreTransform</a>)) {</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;        index = ix-&gt;index;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;    }</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexIVF.html">IndexIVF</a>)) {</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;        {</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;            <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;nprobe&quot;</span>);</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 13; i++) {</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;                <span class="keywordtype">size_t</span> nprobe = 1 &lt;&lt; i;</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;                <span class="keywordflow">if</span> (nprobe &gt;= ix-&gt;nlist) <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;                pr.values.push_back (nprobe);</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;            }</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;        }</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;        <span class="keywordflow">if</span> (dynamic_cast&lt;const IndexHNSW*&gt;(ix-&gt;quantizer)) {</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;            <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;efSearch&quot;</span>);</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 2; i &lt;= 9; i++) {</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;                pr.values.push_back (1 &lt;&lt; i);</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;            }</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;        }</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;    }</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexPQ.html">IndexPQ</a>)) {</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;        <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;ht&quot;</span>);</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;        init_pq_ParameterRange (ix-&gt;pq, pr);</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;    }</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexIVFPQ.html">IndexIVFPQ</a>)) {</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;        <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;ht&quot;</span>);</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;        init_pq_ParameterRange (ix-&gt;pq, pr);</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;    }</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexIVF.html">IndexIVF</a>)) {</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1MultiIndexQuantizer.html">MultiIndexQuantizer</a> *miq =</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;            <span class="keyword">dynamic_cast&lt;</span><span class="keyword">const </span><a class="code" href="structfaiss_1_1MultiIndexQuantizer.html">MultiIndexQuantizer</a> *<span class="keyword">&gt;</span> (ix-&gt;quantizer);</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;        <span class="keywordflow">if</span> (miq) {</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;            <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr_max_codes = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;max_codes&quot;</span>);</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 8; i &lt; 20; i++) {</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;                pr_max_codes.values.push_back (1 &lt;&lt; i);</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;            }</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;            pr_max_codes.values.push_back (1.0 / 0.0);</div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;        }</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;    }</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexIVFPQR.html">IndexIVFPQR</a>)) {</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;        <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;k_factor&quot;</span>);</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt;= 6; i++) {</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;            pr.values.push_back (1 &lt;&lt; i);</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;        }</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;    }</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;    <span class="keywordflow">if</span> (dynamic_cast&lt;const IndexHNSW*&gt;(index)) {</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;        <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">add_range</a>(<span class="stringliteral">&quot;efSearch&quot;</span>);</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 2; i &lt;= 9; i++) {</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;            pr.values.push_back (1 &lt;&lt; i);</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;        }</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;    }</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;}</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;<span class="preprocessor">#undef DC</span></div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="comment">// non-const version</span></div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="preprocessor">#define DC(classname) classname *ix = dynamic_cast&lt;classname *&gt;(index)</span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;<span class="comment">/// set a combination of parameters on an index</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">  411</a></span>&#160;<span class="comment"></span><span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">ParameterSpace::set_index_parameters</a> (<a class="code" href="structfaiss_1_1Index.html">Index</a> *index, <span class="keywordtype">size_t</span> cno)<span class="keyword"> const</span></div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>.size(); i++) {</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>[i];</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;        <span class="keywordtype">size_t</span> j = cno % pr.values.size();</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;        cno /= pr.values.size();</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;        <span class="keywordtype">double</span> val = pr.values [j];</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        <a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a> (index, pr.name, val);</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;    }</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;}</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;<span class="comment">/// set a combination of parameters on an index</span></div>
<div class="line"><a name="l00424"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#aef1f2af781a71e7f0cf6f67603ef7cc1">  424</a></span>&#160;<span class="comment"></span><span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">ParameterSpace::set_index_parameters</a> (</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;     <a class="code" href="structfaiss_1_1Index.html">Index</a> *index, <span class="keyword">const</span> <span class="keywordtype">char</span> *description_in)<span class="keyword"> const</span></div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;    <span class="keywordtype">char</span> description[strlen(description_in) + 1];</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;    <span class="keywordtype">char</span> *ptr;</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;    memcpy (description, description_in, strlen(description_in) + 1);</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">char</span> *tok = strtok_r (description, <span class="stringliteral">&quot; ,&quot;</span>, &amp;ptr);</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;         tok;</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;         tok = strtok_r (<span class="keyword">nullptr</span>, <span class="stringliteral">&quot; ,&quot;</span>, &amp;ptr)) {</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;        <span class="keywordtype">char</span> name[100];</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;        <span class="keywordtype">double</span> val;</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;        <span class="keywordtype">int</span> ret = sscanf (tok, <span class="stringliteral">&quot;%100[^=]=%lf&quot;</span>, name, &amp;val);</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;        FAISS_THROW_IF_NOT_FMT (</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;           ret == 2, <span class="stringliteral">&quot;could not interpret parameters %s&quot;</span>, tok);</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;        <a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a> (index, name, val);</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;    }</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;}</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;</div>
<div class="line"><a name="l00444"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">  444</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">ParameterSpace::set_index_parameter</a> (</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;        <a class="code" href="structfaiss_1_1Index.html">Index</a> * index, <span class="keyword">const</span> std::string &amp; name, <span class="keywordtype">double</span> val)<span class="keyword"> const</span></div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a7a9f2292c4e0ac3aad569434edea87b0">verbose</a> &gt; 1)</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;        printf(<span class="stringliteral">&quot;    set %s=%g\n&quot;</span>, name.c_str(), val);</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;    <span class="keywordflow">if</span> (name == <span class="stringliteral">&quot;verbose&quot;</span>) {</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;        index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a> = int(val);</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        <span class="comment">// and fall through to also enable it on sub-indexes</span></div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;    }</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexPreTransform.html">IndexPreTransform</a>)) {</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;        <a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a> (ix-&gt;index, name, val);</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;    }</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexShards.html">IndexShards</a>)) {</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        <span class="comment">// call on all sub-indexes</span></div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        <span class="keywordflow">for</span> (<span class="keyword">auto</span> &amp; shard_index : ix-&gt;shard_indexes) {</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;            <a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a> (shard_index, name, val);</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;        }</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;    }</div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;    <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexRefineFlat.html">IndexRefineFlat</a>)) {</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;        <span class="keywordflow">if</span> (name == <span class="stringliteral">&quot;k_factor_rf&quot;</span>) {</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;            ix-&gt;k_factor = int(val);</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;            <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;        }</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        <span class="comment">// otherwise it is for the sub-index</span></div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        <a class="code" href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">set_index_parameter</a> (&amp;ix-&gt;refine_index, name, val);</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;    }</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;    <span class="keywordflow">if</span> (name == <span class="stringliteral">&quot;verbose&quot;</span>) {</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;        index-&gt;<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a> = int(val);</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;        <span class="keywordflow">return</span>; <span class="comment">// last verbose that we could find</span></div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;    }</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;    <span class="keywordflow">if</span> (name == <span class="stringliteral">&quot;nprobe&quot;</span>) {</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;        <span class="keywordflow">if</span> ( DC(<a class="code" href="structfaiss_1_1IndexIVF.html">IndexIVF</a>)) {</div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;            ix-&gt;nprobe = int(val);</div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;            <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;        }</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;    }</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;</div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;    <span class="keywordflow">if</span> (name == <span class="stringliteral">&quot;ht&quot;</span>) {</div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;        <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexPQ.html">IndexPQ</a>)) {</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;            <span class="keywordflow">if</span> (val &gt;= ix-&gt;pq.code_size * 8) {</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;                ix-&gt;search_type = <a class="code" href="structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a">IndexPQ::ST_PQ</a>;</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;                ix-&gt;search_type = <a class="code" href="structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42feaf06a0e6b53f9cbe1c791c6912169b738">IndexPQ::ST_polysemous</a>;</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;                ix-&gt;polysemous_ht = int(val);</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;            }</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;            <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexIVFPQ.html">IndexIVFPQ</a>)) {</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;            <span class="keywordflow">if</span> (val &gt;= ix-&gt;pq.code_size * 8) {</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;                ix-&gt;polysemous_ht = 0;</div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;                ix-&gt;polysemous_ht = int(val);</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;            }</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;            <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;        }</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;    }</div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;    <span class="keywordflow">if</span> (name == <span class="stringliteral">&quot;k_factor&quot;</span>) {</div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexIVFPQR.html">IndexIVFPQR</a>)) {</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;            ix-&gt;k_factor = val;</div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;            <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;        }</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;    }</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;    <span class="keywordflow">if</span> (name == <span class="stringliteral">&quot;max_codes&quot;</span>) {</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;        <span class="keywordflow">if</span> (DC (<a class="code" href="structfaiss_1_1IndexIVF.html">IndexIVF</a>)) {</div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;            ix-&gt;max_codes = finite(val) ? size_t(val) : 0;</div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;            <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;        }</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;    }</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;    FAISS_THROW_FMT (<span class="stringliteral">&quot;ParameterSpace::set_index_parameter:&quot;</span></div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;                     <span class="stringliteral">&quot;could not set parameter %s&quot;</span>,</div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;                     name.c_str());</div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;}</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160;</div>
<div class="line"><a name="l00523"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#aa4bb1f0008689903aa936baee61d09d0">  523</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#aa4bb1f0008689903aa936baee61d09d0">ParameterSpace::display</a> ()<span class="keyword"> const</span></div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;    printf (<span class="stringliteral">&quot;ParameterSpace, %ld parameters, %ld combinations:\n&quot;</span>,</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;            <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>.size (), <a class="code" href="structfaiss_1_1ParameterSpace.html#a488329e3c1f08b9980d8e0f9c1491c75">n_combinations</a> ());</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>.size(); i++) {</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;        <span class="keyword">const</span> <a class="code" href="structfaiss_1_1ParameterRange.html">ParameterRange</a> &amp; pr = <a class="code" href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">parameter_ranges</a>[i];</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;        printf (<span class="stringliteral">&quot;   %s: &quot;</span>, pr.name.c_str ());</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;        <span class="keywordtype">char</span> sep = <span class="charliteral">&#39;[&#39;</span>;</div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> j = 0; j &lt; pr.values.size(); j++) {</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;            printf (<span class="stringliteral">&quot;%c %g&quot;</span>, sep, pr.values [j]);</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;            sep = <span class="charliteral">&#39;,&#39;</span>;</div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;        }</div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;        printf (<span class="stringliteral">&quot;]\n&quot;</span>);</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;    }</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;}</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;</div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;</div>
<div class="line"><a name="l00541"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#ab7039882ec68aabc6c52cff883f75c28">  541</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#ab7039882ec68aabc6c52cff883f75c28">ParameterSpace::update_bounds</a> (<span class="keywordtype">size_t</span> cno, <span class="keyword">const</span> <a class="code" href="structfaiss_1_1OperatingPoint.html">OperatingPoint</a> &amp; op,</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;                                    <span class="keywordtype">double</span> *upper_bound_perf,</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;                                    <span class="keywordtype">double</span> *lower_bound_t)<span class="keyword"> const</span></div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a7cdedaf4bab33293771c4267d453a950">combination_ge</a> (cno, op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a2c023f1484e4748e3e97681bb1f4b78e">cno</a>)) {</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;        <span class="keywordflow">if</span> (op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a886492ffe2b337539fadc798c8f4a6a8">t</a> &gt; *lower_bound_t) *lower_bound_t = op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a886492ffe2b337539fadc798c8f4a6a8">t</a>;</div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;    }</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a7cdedaf4bab33293771c4267d453a950">combination_ge</a> (op.<a class="code" href="structfaiss_1_1OperatingPoint.html#a2c023f1484e4748e3e97681bb1f4b78e">cno</a>, cno)) {</div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;        <span class="keywordflow">if</span> (op.<a class="code" href="structfaiss_1_1OperatingPoint.html#ad218d1641b6e32d043a215542485a457">perf</a> &lt; *upper_bound_perf) *upper_bound_perf = op.<a class="code" href="structfaiss_1_1OperatingPoint.html#ad218d1641b6e32d043a215542485a457">perf</a>;</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;    }</div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;}</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;</div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;</div>
<div class="line"><a name="l00555"></a><span class="lineno"><a class="line" href="structfaiss_1_1ParameterSpace.html#a57728d29c4785d9003b9cd564d0c51b2">  555</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1ParameterSpace.html#a57728d29c4785d9003b9cd564d0c51b2">ParameterSpace::explore</a> (<a class="code" href="structfaiss_1_1Index.html">Index</a> *index,</div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;                              <span class="keywordtype">size_t</span> nq, <span class="keyword">const</span> <span class="keywordtype">float</span> *xq,</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;                              <span class="keyword">const</span> <a class="code" href="structfaiss_1_1AutoTuneCriterion.html">AutoTuneCriterion</a> &amp; crit,</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;                              <a class="code" href="structfaiss_1_1OperatingPoints.html">OperatingPoints</a> * ops)<span class="keyword"> const</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;    FAISS_THROW_IF_NOT_MSG (nq == crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#adcfaafb3f1b3449e2cfd553f0f603a5b">nq</a>,</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;                      <span class="stringliteral">&quot;criterion does not have the same nb of queries&quot;</span>);</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;    <span class="keywordtype">size_t</span> n_comb = <a class="code" href="structfaiss_1_1ParameterSpace.html#a488329e3c1f08b9980d8e0f9c1491c75">n_combinations</a> ();</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a76aeae25b3269fb24a26194fbe013b86">n_experiments</a> == 0) {</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> cno = 0; cno &lt; n_comb; cno++) {</div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;            <a class="code" href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">set_index_parameters</a> (index, cno);</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;            std::vector&lt;Index::idx_t&gt; I(nq * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>);</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;            std::vector&lt;float&gt; D(nq * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>);</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;            <span class="keywordtype">double</span> t0 = <a class="code" href="namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb">getmillisecs</a> ();</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;            index-&gt;<a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a> (nq, xq, crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>, D.data(), I.data());</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;            <span class="keywordtype">double</span> t_search = (<a class="code" href="namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb">getmillisecs</a>() - t0) / 1e3;</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;            <span class="keywordtype">double</span> perf = crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9084449e216b331c5f753a10c6de6a47">evaluate</a> (D.data(), I.data());</div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;</div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;            <span class="keywordtype">bool</span> keep = ops-&gt;<a class="code" href="structfaiss_1_1OperatingPoints.html#a7afabe0576800255eeec680486cb30df">add</a> (perf, t_search, <a class="code" href="structfaiss_1_1ParameterSpace.html#a7bb416dbab456bb1ecd9ace433fa5312">combination_name</a> (cno), cno);</div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;            <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a7a9f2292c4e0ac3aad569434edea87b0">verbose</a>)</div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;                printf(<span class="stringliteral">&quot;  %ld/%ld: %s perf=%.3f t=%.3f s %s\n&quot;</span>, cno, n_comb,</div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;                       <a class="code" href="structfaiss_1_1ParameterSpace.html#a7bb416dbab456bb1ecd9ace433fa5312">combination_name</a> (cno).c_str(), perf, t_search,</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;                       keep ? <span class="stringliteral">&quot;*&quot;</span> : <span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;        }</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;        <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;    }</div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;    <span class="keywordtype">int</span> n_exp = <a class="code" href="structfaiss_1_1ParameterSpace.html#a76aeae25b3269fb24a26194fbe013b86">n_experiments</a>;</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;</div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;    <span class="keywordflow">if</span> (n_exp &gt; n_comb) n_exp = n_comb;</div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;    FAISS_THROW_IF_NOT (n_comb == 1 || n_exp &gt; 2);</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;    std::vector&lt;int&gt; perm (n_comb);</div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;    <span class="comment">// make sure the slowest and fastest experiment are run</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;    perm[0] = 0;</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;    <span class="keywordflow">if</span> (n_comb &gt; 1) {</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;        perm[1] = n_comb - 1;</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;        rand_perm (&amp;perm[2], n_comb - 2, 1234);</div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 2; i &lt; perm.size(); i++) perm[i] ++;</div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;    }</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;</div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> xp = 0; xp &lt; n_exp; xp++) {</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;        <span class="keywordtype">size_t</span> cno = perm[xp];</div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a7a9f2292c4e0ac3aad569434edea87b0">verbose</a>)</div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;            printf(<span class="stringliteral">&quot;  %ld/%d: cno=%ld %s &quot;</span>, xp, n_exp, cno,</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;                   <a class="code" href="structfaiss_1_1ParameterSpace.html#a7bb416dbab456bb1ecd9ace433fa5312">combination_name</a> (cno).c_str());</div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;</div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;        {</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;            <span class="keywordtype">double</span> lower_bound_t = 0.0;</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;            <span class="keywordtype">double</span> upper_bound_perf = 1.0;</div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; ops-&gt;<a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>.size(); i++) {</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;                <a class="code" href="structfaiss_1_1ParameterSpace.html#ab7039882ec68aabc6c52cff883f75c28">update_bounds</a> (cno, ops-&gt;<a class="code" href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">all_pts</a>[i],</div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;                               &amp;upper_bound_perf, &amp;lower_bound_t);</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;            }</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;            <span class="keywordtype">double</span> best_t = ops-&gt;<a class="code" href="structfaiss_1_1OperatingPoints.html#a3a0723e0900f7048ac9567341de5ee56">t_for_perf</a> (upper_bound_perf);</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;            <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a7a9f2292c4e0ac3aad569434edea87b0">verbose</a>)</div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;                printf (<span class="stringliteral">&quot;bounds [perf&lt;=%.3f t&gt;=%.3f] %s&quot;</span>,</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;                        upper_bound_perf, lower_bound_t,</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;                        best_t &lt;= lower_bound_t ? <span class="stringliteral">&quot;skip\n&quot;</span> : <span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;            <span class="keywordflow">if</span> (best_t &lt;= lower_bound_t) <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;        }</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;</div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;        <a class="code" href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">set_index_parameters</a> (index, cno);</div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;        std::vector&lt;Index::idx_t&gt; I(nq * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>);</div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;        std::vector&lt;float&gt; D(nq * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>);</div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;</div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;        <span class="keywordtype">double</span> t0 = <a class="code" href="namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb">getmillisecs</a> ();</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#af6dc3b9c5631b509cbae99bf0f24170b">thread_over_batches</a>) {</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;<span class="preprocessor">#pragma omp parallel for</span></div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;<span class="preprocessor"></span>            <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> q0 = 0; q0 &lt; nq; q0 += <a class="code" href="structfaiss_1_1ParameterSpace.html#aee8fd44e15656ba80fe98de4c65ed767">batchsize</a>) {</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;                <span class="keywordtype">size_t</span> q1 = q0 + <a class="code" href="structfaiss_1_1ParameterSpace.html#aee8fd44e15656ba80fe98de4c65ed767">batchsize</a>;</div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;                <span class="keywordflow">if</span> (q1 &gt; nq) q1 = nq;</div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;                index-&gt;<a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a> (q1 - q0, xq + q0 * index-&gt;<a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>,</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;                               crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>,</div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;                               D.data() + q0 * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>,</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;                               I.data() + q0 * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>);</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;            }</div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;            <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> q0 = 0; q0 &lt; nq; q0 += <a class="code" href="structfaiss_1_1ParameterSpace.html#aee8fd44e15656ba80fe98de4c65ed767">batchsize</a>) {</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;                <span class="keywordtype">size_t</span> q1 = q0 + <a class="code" href="structfaiss_1_1ParameterSpace.html#aee8fd44e15656ba80fe98de4c65ed767">batchsize</a>;</div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;                <span class="keywordflow">if</span> (q1 &gt; nq) q1 = nq;</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;                index-&gt;<a class="code" href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">search</a> (q1 - q0, xq + q0 * index-&gt;<a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>,</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;                               crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>,</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;                               D.data() + q0 * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>,</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;                               I.data() + q0 * crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">nnn</a>);</div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;            }</div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;        }</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;</div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;        <span class="keywordtype">double</span> t_search = (<a class="code" href="namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb">getmillisecs</a>() - t0) / 1e3;</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;        <span class="keywordtype">double</span> perf = crit.<a class="code" href="structfaiss_1_1AutoTuneCriterion.html#a9084449e216b331c5f753a10c6de6a47">evaluate</a> (D.data(), I.data());</div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;</div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;        <span class="keywordtype">bool</span> keep = ops-&gt;<a class="code" href="structfaiss_1_1OperatingPoints.html#a7afabe0576800255eeec680486cb30df">add</a> (perf, t_search, <a class="code" href="structfaiss_1_1ParameterSpace.html#a7bb416dbab456bb1ecd9ace433fa5312">combination_name</a> (cno), cno);</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1ParameterSpace.html#a7a9f2292c4e0ac3aad569434edea87b0">verbose</a>)</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;            printf(<span class="stringliteral">&quot; perf %.3f t %.3f %s\n&quot;</span>, perf, t_search,</div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;                   keep ? <span class="stringliteral">&quot;*&quot;</span> : <span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;    }</div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;}</div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;</div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;<span class="comment">/***************************************************************</span></div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;<span class="comment"> * index_factory</span></div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;<span class="comment"> ***************************************************************/</span></div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;</div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;</div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;<span class="keyword">struct </span>VTChain {</div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;    std::vector&lt;VectorTransform *&gt; chain;</div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;    ~VTChain () {</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; chain.size(); i++) {</div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;            <span class="keyword">delete</span> chain[i];</div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;        }</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;    }</div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;};</div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;</div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;<span class="comment"></span></div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;<span class="comment">/// what kind of training does this coarse quantizer require?</span></div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;<span class="comment"></span><span class="keywordtype">char</span> get_trains_alone(<span class="keyword">const</span> Index *coarse_quantizer) {</div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;    <span class="keywordflow">return</span></div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;        <span class="keyword">dynamic_cast&lt;</span><span class="keyword">const </span>MultiIndexQuantizer*<span class="keyword">&gt;</span>(coarse_quantizer) ? 1 :</div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;        0;</div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;}</div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;</div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;</div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;}</div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;</div>
<div class="line"><a name="l00688"></a><span class="lineno"><a class="line" href="namespacefaiss.html#a0c95ec47726f2ce3fb668dcb1f9a3317">  688</a></span>&#160;<a class="code" href="structfaiss_1_1Index.html">Index</a> *<a class="code" href="namespacefaiss.html#a0c95ec47726f2ce3fb668dcb1f9a3317">index_factory</a> (<span class="keywordtype">int</span> d, <span class="keyword">const</span> <span class="keywordtype">char</span> *description_in, <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">MetricType</a> metric)</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;{</div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;    VTChain vts;</div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;    <a class="code" href="structfaiss_1_1Index.html">Index</a> *coarse_quantizer = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;    <a class="code" href="structfaiss_1_1Index.html">Index</a> *index = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;    <span class="keywordtype">bool</span> add_idmap = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;    <span class="keywordtype">bool</span> make_IndexRefineFlat = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;</div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter1.html">ScopeDeleter1&lt;Index&gt;</a> del_coarse_quantizer, del_index;</div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;</div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;    <span class="keywordtype">char</span> description[strlen(description_in) + 1];</div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;    <span class="keywordtype">char</span> *ptr;</div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;    memcpy (description, description_in, strlen(description_in) + 1);</div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;</div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;    <span class="keywordtype">int</span> ncentroids = -1;</div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;</div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">char</span> *tok = strtok_r (description, <span class="stringliteral">&quot; ,&quot;</span>, &amp;ptr);</div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;         tok;</div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;         tok = strtok_r (<span class="keyword">nullptr</span>, <span class="stringliteral">&quot; ,&quot;</span>, &amp;ptr)) {</div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;        <span class="keywordtype">int</span> d_out, opq_M, nbit, M, M2, pq_m, ncent;</div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;        std::string stok(tok);</div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;        <span class="comment">// to avoid mem leaks with exceptions:</span></div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;        <span class="comment">// do all tests before any instanciation</span></div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;</div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;        <a class="code" href="structfaiss_1_1VectorTransform.html">VectorTransform</a> *vt_1 = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;        <a class="code" href="structfaiss_1_1Index.html">Index</a> *coarse_quantizer_1 = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;        <a class="code" href="structfaiss_1_1Index.html">Index</a> *index_1 = <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;</div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;        <span class="comment">// VectorTransforms</span></div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;        <span class="keywordflow">if</span> (sscanf (tok, <span class="stringliteral">&quot;PCA%d&quot;</span>, &amp;d_out) == 1) {</div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;            vt_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1PCAMatrix.html">PCAMatrix</a> (d, d_out);</div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;            d = d_out;</div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sscanf (tok, <span class="stringliteral">&quot;PCAR%d&quot;</span>, &amp;d_out) == 1) {</div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;            vt_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1PCAMatrix.html">PCAMatrix</a> (d, d_out, 0, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;            d = d_out;</div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sscanf (tok, <span class="stringliteral">&quot;PCAW%d&quot;</span>, &amp;d_out) == 1) {</div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;            vt_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1PCAMatrix.html">PCAMatrix</a> (d, d_out, -0.5, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;            d = d_out;</div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sscanf (tok, <span class="stringliteral">&quot;PCAWR%d&quot;</span>, &amp;d_out) == 1) {</div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;            vt_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1PCAMatrix.html">PCAMatrix</a> (d, d_out, -0.5, <span class="keyword">true</span>);</div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;            d = d_out;</div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sscanf (tok, <span class="stringliteral">&quot;OPQ%d_%d&quot;</span>, &amp;opq_M, &amp;d_out) == 2) {</div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;            vt_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1OPQMatrix.html">OPQMatrix</a> (d, opq_M, d_out);</div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;            d = d_out;</div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sscanf (tok, <span class="stringliteral">&quot;OPQ%d&quot;</span>, &amp;opq_M) == 1) {</div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;            vt_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1OPQMatrix.html">OPQMatrix</a> (d, opq_M);</div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (stok == <span class="stringliteral">&quot;L2norm&quot;</span>) {</div>
<div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;            vt_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1NormalizationTransform.html">NormalizationTransform</a> (d, 2.0);</div>
<div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;        <span class="comment">// coarse quantizers</span></div>
<div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!coarse_quantizer &amp;&amp;</div>
<div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;                   sscanf (tok, <span class="stringliteral">&quot;IVF%d_HNSW%d&quot;</span>, &amp;ncentroids, &amp;M) == 2) {</div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;            FAISS_THROW_IF_NOT (metric == METRIC_L2);</div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;            coarse_quantizer_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexHNSWFlat.html">IndexHNSWFlat</a> (d, M);</div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!coarse_quantizer &amp;&amp;</div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;                   sscanf (tok, <span class="stringliteral">&quot;IVF%d&quot;</span>, &amp;ncentroids) == 1) {</div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;            <span class="keywordflow">if</span> (metric == METRIC_L2) {</div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;                coarse_quantizer_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatL2.html">IndexFlatL2</a> (d);</div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;            } <span class="keywordflow">else</span> { <span class="comment">// if (metric == METRIC_IP)</span></div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;                coarse_quantizer_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatIP.html">IndexFlatIP</a> (d);</div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;            }</div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!coarse_quantizer &amp;&amp; sscanf (tok, <span class="stringliteral">&quot;IMI2x%d&quot;</span>, &amp;nbit) == 1) {</div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;            FAISS_THROW_IF_NOT_MSG (metric == METRIC_L2,</div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;                             <span class="stringliteral">&quot;MultiIndex not implemented for inner prod search&quot;</span>);</div>
<div class="line"><a name="l00752"></a><span class="lineno">  752</span>&#160;            coarse_quantizer_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1MultiIndexQuantizer.html">MultiIndexQuantizer</a> (d, 2, nbit);</div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;            ncentroids = 1 &lt;&lt; (2 * nbit);</div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (stok == <span class="stringliteral">&quot;IDMap&quot;</span>) {</div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;            add_idmap = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160;</div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;            <span class="comment">// IVFs</span></div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp; stok == <span class="stringliteral">&quot;Flat&quot;</span>) {</div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;            <span class="keywordflow">if</span> (coarse_quantizer) {</div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;                <span class="comment">// if there was an IVF in front, then it is an IVFFlat</span></div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;                <a class="code" href="structfaiss_1_1IndexIVF.html">IndexIVF</a> *index_ivf = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html">IndexIVFFlat</a> (</div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;                    coarse_quantizer, d, ncentroids, metric);</div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#a1dcea762fc322fdcffe64f78994edea0">quantizer_trains_alone</a> =</div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;                    get_trains_alone (coarse_quantizer);</div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#abb7097ed40b15ba0af08af6d03608f72">cp</a>.<a class="code" href="structfaiss_1_1ClusteringParameters.html#ad997fb511f574f7ddc69938c21612f8d">spherical</a> = metric == METRIC_INNER_PRODUCT;</div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;                del_coarse_quantizer.release ();</div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;                index_1 = index_ivf;</div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;                index_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a> (d, metric);</div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;            }</div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp; (stok == <span class="stringliteral">&quot;SQ8&quot;</span> || stok == <span class="stringliteral">&quot;SQ4&quot;</span>)) {</div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;            <a class="code" href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952e">ScalarQuantizer::QuantizerType</a> qt =</div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;                stok == <span class="stringliteral">&quot;SQ8&quot;</span> ? <a class="code" href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952ea1650389e3efa052ff60177d502328a2c">ScalarQuantizer::QT_8bit</a> :</div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;                stok == <span class="stringliteral">&quot;SQ4&quot;</span> ? <a class="code" href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952eacd3d1bd71533a7bc52149e4b3d1db13b">ScalarQuantizer::QT_4bit</a> :</div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;                <a class="code" href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952eacd3d1bd71533a7bc52149e4b3d1db13b">ScalarQuantizer::QT_4bit</a>;</div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;            <span class="keywordflow">if</span> (coarse_quantizer) {</div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;                <a class="code" href="structfaiss_1_1IndexIVFScalarQuantizer.html">IndexIVFScalarQuantizer</a> *index_ivf =</div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;                    <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFScalarQuantizer.html">IndexIVFScalarQuantizer</a> (</div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;                      coarse_quantizer, d, ncentroids, qt, metric);</div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#a1dcea762fc322fdcffe64f78994edea0">quantizer_trains_alone</a> =</div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;                    get_trains_alone (coarse_quantizer);</div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;                del_coarse_quantizer.release ();</div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;                index_1 = index_ivf;</div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;                index_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexScalarQuantizer.html">IndexScalarQuantizer</a> (d, qt, metric);</div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;            }</div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp; sscanf (tok, <span class="stringliteral">&quot;PQ%d+%d&quot;</span>, &amp;M, &amp;M2) == 2) {</div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;            FAISS_THROW_IF_NOT_MSG(coarse_quantizer,</div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;                             <span class="stringliteral">&quot;PQ with + works only with an IVF&quot;</span>);</div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;            FAISS_THROW_IF_NOT_MSG(metric == METRIC_L2,</div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;                             <span class="stringliteral">&quot;IVFPQR not implemented for inner product search&quot;</span>);</div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;            <a class="code" href="structfaiss_1_1IndexIVFPQR.html">IndexIVFPQR</a> *index_ivf = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFPQR.html">IndexIVFPQR</a> (</div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;                  coarse_quantizer, d, ncentroids, M, 8, M2, 8);</div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;            index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#a1dcea762fc322fdcffe64f78994edea0">quantizer_trains_alone</a> =</div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;                    get_trains_alone (coarse_quantizer);</div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160;            del_coarse_quantizer.release ();</div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;            index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;            index_1 = index_ivf;</div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp; (sscanf (tok, <span class="stringliteral">&quot;PQ%d&quot;</span>, &amp;M) == 1 ||</div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;                              sscanf (tok, <span class="stringliteral">&quot;PQ%dnp&quot;</span>, &amp;M) == 1)) {</div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;            <span class="keywordtype">bool</span> do_polysemous_training = stok.find(<span class="stringliteral">&quot;np&quot;</span>) == std::string::npos;</div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;            <span class="keywordflow">if</span> (coarse_quantizer) {</div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;                <a class="code" href="structfaiss_1_1IndexIVFPQ.html">IndexIVFPQ</a> *index_ivf = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIVFPQ.html">IndexIVFPQ</a> (</div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;                    coarse_quantizer, d, ncentroids, M, 8);</div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#a1dcea762fc322fdcffe64f78994edea0">quantizer_trains_alone</a> =</div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;                    get_trains_alone (coarse_quantizer);</div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">metric_type</a> = metric;</div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#abb7097ed40b15ba0af08af6d03608f72">cp</a>.<a class="code" href="structfaiss_1_1ClusteringParameters.html#ad997fb511f574f7ddc69938c21612f8d">spherical</a> = metric == METRIC_INNER_PRODUCT;</div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;                del_coarse_quantizer.release ();</div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;                index_ivf-&gt;<a class="code" href="structfaiss_1_1IndexIVFPQ.html#a9d5373633df7a9bec4de69400b9adeed">do_polysemous_training</a> = do_polysemous_training;</div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;                index_1 = index_ivf;</div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;                <a class="code" href="structfaiss_1_1IndexPQ.html">IndexPQ</a> *index_pq = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexPQ.html">IndexPQ</a> (d, M, 8, metric);</div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;                index_pq-&gt;<a class="code" href="structfaiss_1_1IndexPQ.html#af616e1f3c7bff7f62c2607b8079da43f">do_polysemous_training</a> = do_polysemous_training;</div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;                index_1 = index_pq;</div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;            }</div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp;</div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;                   sscanf (tok, <span class="stringliteral">&quot;HNSW%d_%d+PQ%d&quot;</span>, &amp;M, &amp;ncent, &amp;pq_m) == 3) {</div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;            <a class="code" href="structfaiss_1_1Index.html">Index</a> * quant = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatL2.html">IndexFlatL2</a> (d);</div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;            <a class="code" href="structfaiss_1_1IndexHNSW2Level.html">IndexHNSW2Level</a> * hidx2l = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexHNSW2Level.html">IndexHNSW2Level</a> (quant, ncent, pq_m, M);</div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;            <a class="code" href="structfaiss_1_1Index2Layer.html">Index2Layer</a> * idx2l = <span class="keyword">dynamic_cast&lt;</span><a class="code" href="structfaiss_1_1Index2Layer.html">Index2Layer</a>*<span class="keyword">&gt;</span>(hidx2l-&gt;storage);</div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;            idx2l-&gt;<a class="code" href="structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa">q1</a>.<a class="code" href="structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;            index_1 = hidx2l;</div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp;</div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;                   sscanf (tok, <span class="stringliteral">&quot;HNSW%d_2x%d+PQ%d&quot;</span>, &amp;M, &amp;nbit, &amp;pq_m) == 3) {</div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;            <a class="code" href="structfaiss_1_1Index.html">Index</a> * quant = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1MultiIndexQuantizer.html">MultiIndexQuantizer</a> (d, 2, nbit);</div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;            <a class="code" href="structfaiss_1_1IndexHNSW2Level.html">IndexHNSW2Level</a> * hidx2l =</div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;                <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexHNSW2Level.html">IndexHNSW2Level</a> (quant, 1 &lt;&lt; (2 * nbit), pq_m, M);</div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;            <a class="code" href="structfaiss_1_1Index2Layer.html">Index2Layer</a> * idx2l = <span class="keyword">dynamic_cast&lt;</span><a class="code" href="structfaiss_1_1Index2Layer.html">Index2Layer</a>*<span class="keyword">&gt;</span>(hidx2l-&gt;storage);</div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;            idx2l-&gt;<a class="code" href="structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa">q1</a>.<a class="code" href="structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;            idx2l-&gt;<a class="code" href="structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa">q1</a>.<a class="code" href="structfaiss_1_1Level1Quantizer.html#a1dcea762fc322fdcffe64f78994edea0">quantizer_trains_alone</a> = 1;</div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;            index_1 = hidx2l;</div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp;</div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;                   sscanf (tok, <span class="stringliteral">&quot;HNSW%d_PQ%d&quot;</span>, &amp;M, &amp;pq_m) == 2) {</div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;            index_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexHNSWPQ.html">IndexHNSWPQ</a> (d, pq_m, M);</div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp;</div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;                   sscanf (tok, <span class="stringliteral">&quot;HNSW%d&quot;</span>, &amp;M) == 1) {</div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;            index_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexHNSWFlat.html">IndexHNSWFlat</a> (d, M);</div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!index &amp;&amp;</div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;                   sscanf (tok, <span class="stringliteral">&quot;HNSW%d_SQ%d&quot;</span>, &amp;M, &amp;pq_m) == 2 &amp;&amp;</div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;                   pq_m == 8) {</div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;            index_1 = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexHNSWSQ.html">IndexHNSWSQ</a> (d, <a class="code" href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952ea1650389e3efa052ff60177d502328a2c">ScalarQuantizer::QT_8bit</a>, M);</div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (stok == <span class="stringliteral">&quot;RFlat&quot;</span>) {</div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;            make_IndexRefineFlat = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;            FAISS_THROW_FMT( <span class="stringliteral">&quot;could not parse token \&quot;%s\&quot; in %s\n&quot;</span>,</div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;                             tok, description_in);</div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;        }</div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;</div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;        <span class="keywordflow">if</span> (index_1 &amp;&amp; add_idmap) {</div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;            <a class="code" href="structfaiss_1_1IndexIDMap.html">IndexIDMap</a> *idmap = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexIDMap.html">IndexIDMap</a>(index_1);</div>
<div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;            del_index.set (idmap);</div>
<div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160;            idmap-&gt;<a class="code" href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;            index_1 = idmap;</div>
<div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;            add_idmap = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;        }</div>
<div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;</div>
<div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;        <span class="keywordflow">if</span> (vt_1)  {</div>
<div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;            vts.chain.push_back (vt_1);</div>
<div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;        }</div>
<div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160;</div>
<div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;        <span class="keywordflow">if</span> (coarse_quantizer_1) {</div>
<div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;            coarse_quantizer = coarse_quantizer_1;</div>
<div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;            del_coarse_quantizer.set (coarse_quantizer);</div>
<div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;        }</div>
<div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;</div>
<div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;        <span class="keywordflow">if</span> (index_1) {</div>
<div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160;            index = index_1;</div>
<div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;            del_index.set (index);</div>
<div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;        }</div>
<div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;    }</div>
<div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;</div>
<div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;    FAISS_THROW_IF_NOT_FMT(index, <span class="stringliteral">&quot;descrption %s did not generate an index&quot;</span>,</div>
<div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160;                    description_in);</div>
<div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;</div>
<div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;    <span class="comment">// nothing can go wrong now</span></div>
<div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;    del_index.release ();</div>
<div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;    del_coarse_quantizer.release ();</div>
<div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;</div>
<div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160;    <span class="keywordflow">if</span> (add_idmap) {</div>
<div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;        fprintf(stderr, <span class="stringliteral">&quot;index_factory: WARNING: &quot;</span></div>
<div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;                <span class="stringliteral">&quot;IDMap option not used\n&quot;</span>);</div>
<div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;    }</div>
<div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;</div>
<div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;    <span class="keywordflow">if</span> (vts.chain.size() &gt; 0) {</div>
<div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;        <a class="code" href="structfaiss_1_1IndexPreTransform.html">IndexPreTransform</a> *index_pt = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexPreTransform.html">IndexPreTransform</a> (index);</div>
<div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160;        index_pt-&gt;<a class="code" href="structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00891"></a><span class="lineno">  891</span>&#160;        <span class="comment">// add from back</span></div>
<div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;        <span class="keywordflow">while</span> (vts.chain.size() &gt; 0) {</div>
<div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;            index_pt-&gt;prepend_transform (vts.chain.back ());</div>
<div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;            vts.chain.pop_back ();</div>
<div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160;        }</div>
<div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160;        index = index_pt;</div>
<div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;    }</div>
<div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;</div>
<div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;    <span class="keywordflow">if</span> (make_IndexRefineFlat) {</div>
<div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;        <a class="code" href="structfaiss_1_1IndexRefineFlat.html">IndexRefineFlat</a> *index_rf = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexRefineFlat.html">IndexRefineFlat</a> (index);</div>
<div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160;        index_rf-&gt;<a class="code" href="structfaiss_1_1IndexRefineFlat.html#aaf0f6a094de0e9409effa81bedb9c7e2">own_fields</a> = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;        index = index_rf;</div>
<div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;    }</div>
<div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;</div>
<div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;    <span class="keywordflow">return</span> index;</div>
<div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;}</div>
<div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;</div>
<div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;</div>
<div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;</div>
<div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;</div>
<div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;}; <span class="comment">// namespace faiss</span></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a57728d29c4785d9003b9cd564d0c51b2"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a57728d29c4785d9003b9cd564d0c51b2">faiss::ParameterSpace::explore</a></div><div class="ttdeci">void explore(Index *index, size_t nq, const float *xq, const AutoTuneCriterion &amp;crit, OperatingPoints *ops) const </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00555">AutoTune.cpp:555</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html">faiss::IndexIVF</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00166">IndexIVF.h:166</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a334c1bb54bc2b70950a4a63950728cbb"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a334c1bb54bc2b70950a4a63950728cbb">faiss::ParameterSpace::parameter_ranges</a></div><div class="ttdeci">std::vector&lt; ParameterRange &gt; parameter_ranges</div><div class="ttdoc">all tunable parameters </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00134">AutoTune.h:134</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoint_html_aa13782d6d26168531764cb64da941ced"><div class="ttname"><a href="structfaiss_1_1OperatingPoint.html#aa13782d6d26168531764cb64da941ced">faiss::OperatingPoint::key</a></div><div class="ttdeci">std::string key</div><div class="ttdoc">key that identifies this op pt </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00089">AutoTune.h:89</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexHNSWSQ_html"><div class="ttname"><a href="structfaiss_1_1IndexHNSWSQ.html">faiss::IndexHNSWSQ</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexHNSW_8h_source.html#l00302">IndexHNSW.h:302</a></div></div>
<div class="ttc" id="structfaiss_1_1ScalarQuantizer_html_a1201dbd1611fa5c10782ade5d0e4952e"><div class="ttname"><a href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952e">faiss::ScalarQuantizer::QuantizerType</a></div><div class="ttdeci">QuantizerType</div><div class="ttdef"><b>Definition:</b> <a href="IndexScalarQuantizer_8h_source.html#l00032">IndexScalarQuantizer.h:32</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00023">IndexFlat.h:23</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoint_html_a2c023f1484e4748e3e97681bb1f4b78e"><div class="ttname"><a href="structfaiss_1_1OperatingPoint.html#a2c023f1484e4748e3e97681bb1f4b78e">faiss::OperatingPoint::cno</a></div><div class="ttdeci">long cno</div><div class="ttdoc">integer identifer </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00090">AutoTune.h:90</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQR_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQR.html">faiss::IndexIVFPQR</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00149">IndexIVFPQ.h:149</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexPQ_html_af616e1f3c7bff7f62c2607b8079da43f"><div class="ttname"><a href="structfaiss_1_1IndexPQ.html#af616e1f3c7bff7f62c2607b8079da43f">faiss::IndexPQ::do_polysemous_training</a></div><div class="ttdeci">bool do_polysemous_training</div><div class="ttdoc">false = standard PQ </div><div class="ttdef"><b>Definition:</b> <a href="IndexPQ_8h_source.html#l00069">IndexPQ.h:69</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_a1702eeb680ce73ca8c1fd071955f0679"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#a1702eeb680ce73ca8c1fd071955f0679">faiss::OperatingPoints::clear</a></div><div class="ttdeci">void clear()</div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00104">AutoTune.cpp:104</a></div></div>
<div class="ttc" id="structfaiss_1_1OneRecallAtRCriterion_html_afe472c2ae38534c293b02feebf87988d"><div class="ttname"><a href="structfaiss_1_1OneRecallAtRCriterion.html#afe472c2ae38534c293b02feebf87988d">faiss::OneRecallAtRCriterion::evaluate</a></div><div class="ttdeci">double evaluate(const float *D, const idx_t *I) const override</div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00056">AutoTune.cpp:56</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoint_html"><div class="ttname"><a href="structfaiss_1_1OperatingPoint.html">faiss::OperatingPoint</a></div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00086">AutoTune.h:86</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexScalarQuantizer_html"><div class="ttname"><a href="structfaiss_1_1IndexScalarQuantizer.html">faiss::IndexScalarQuantizer</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexScalarQuantizer_8h_source.html#l00099">IndexScalarQuantizer.h:99</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_ab146ed35f0c8f0c48983a054337a98e1"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#ab146ed35f0c8f0c48983a054337a98e1">faiss::OperatingPoints::display</a></div><div class="ttdeci">void display(bool only_optimal=true) const </div><div class="ttdoc">easy-to-read output </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00223">AutoTune.cpp:223</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexPQ_html"><div class="ttname"><a href="structfaiss_1_1IndexPQ.html">faiss::IndexPQ</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexPQ_8h_source.html#l00028">IndexPQ.h:28</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoint_html_ad218d1641b6e32d043a215542485a457"><div class="ttname"><a href="structfaiss_1_1OperatingPoint.html#ad218d1641b6e32d043a215542485a457">faiss::OperatingPoint::perf</a></div><div class="ttdeci">double perf</div><div class="ttdoc">performance measure (output of a Criterion) </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00087">AutoTune.h:87</a></div></div>
<div class="ttc" id="structfaiss_1_1ScalarQuantizer_html_a1201dbd1611fa5c10782ade5d0e4952eacd3d1bd71533a7bc52149e4b3d1db13b"><div class="ttname"><a href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952eacd3d1bd71533a7bc52149e4b3d1db13b">faiss::ScalarQuantizer::QT_4bit</a></div><div class="ttdoc">4 bits per component </div><div class="ttdef"><b>Definition:</b> <a href="IndexScalarQuantizer_8h_source.html#l00034">IndexScalarQuantizer.h:34</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html">faiss::OperatingPoints</a></div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00093">AutoTune.h:93</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_a3a0723e0900f7048ac9567341de5ee56"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#a3a0723e0900f7048ac9567341de5ee56">faiss::OperatingPoints::t_for_perf</a></div><div class="ttdeci">double t_for_perf(double perf) const </div><div class="ttdoc">get time required to obtain a given performance measure </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00176">AutoTune.cpp:176</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html_a3bb11e873707a812999f8391869aafab"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html#a3bb11e873707a812999f8391869aafab">faiss::AutoTuneCriterion::nnn</a></div><div class="ttdeci">idx_t nnn</div><div class="ttdoc">nb of NNs that the query should request </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00029">AutoTune.h:29</a></div></div>
<div class="ttc" id="structfaiss_1_1PCAMatrix_html"><div class="ttname"><a href="structfaiss_1_1PCAMatrix.html">faiss::PCAMatrix</a></div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00132">VectorTransform.h:132</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexFlatL2_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00079">IndexFlat.h:79</a></div></div>
<div class="ttc" id="structfaiss_1_1IntersectionCriterion_html_a6f7aef25852931b22298f7bb4c358791"><div class="ttname"><a href="structfaiss_1_1IntersectionCriterion.html#a6f7aef25852931b22298f7bb4c358791">faiss::IntersectionCriterion::evaluate</a></div><div class="ttdeci">double evaluate(const float *D, const idx_t *I) const override</div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00080">AutoTune.cpp:80</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_a7afabe0576800255eeec680486cb30df"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#a7afabe0576800255eeec680486cb30df">faiss::OperatingPoints::add</a></div><div class="ttdeci">bool add(double perf, double t, const std::string &amp;key, size_t cno=0)</div><div class="ttdoc">add a performance measure. Return whether it is an optimal point </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00114">AutoTune.cpp:114</a></div></div>
<div class="ttc" id="structfaiss_1_1OPQMatrix_html"><div class="ttname"><a href="structfaiss_1_1OPQMatrix.html">faiss::OPQMatrix</a></div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00187">VectorTransform.h:187</a></div></div>
<div class="ttc" id="structfaiss_1_1ScopeDeleter1_html"><div class="ttname"><a href="structfaiss_1_1ScopeDeleter1.html">faiss::ScopeDeleter1</a></div><div class="ttdef"><b>Definition:</b> <a href="FaissException_8h_source.html#l00052">FaissException.h:52</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html_a9d5373633df7a9bec4de69400b9adeed"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html#a9d5373633df7a9bec4de69400b9adeed">faiss::IndexIVFPQ::do_polysemous_training</a></div><div class="ttdeci">bool do_polysemous_training</div><div class="ttdoc">reorder PQ centroids after training? </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00034">IndexIVFPQ.h:34</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_aee8fd44e15656ba80fe98de4c65ed767"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#aee8fd44e15656ba80fe98de4c65ed767">faiss::ParameterSpace::batchsize</a></div><div class="ttdeci">size_t batchsize</div><div class="ttdoc">maximum number of queries to submit at a time. </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00145">AutoTune.h:145</a></div></div>
<div class="ttc" id="structfaiss_1_1Index2Layer_html_a5f2d70740af90b8c7ac946d58ec947aa"><div class="ttname"><a href="structfaiss_1_1Index2Layer.html#a5f2d70740af90b8c7ac946d58ec947aa">faiss::Index2Layer::q1</a></div><div class="ttdeci">Level1Quantizer q1</div><div class="ttdoc">first level quantizer </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00198">IndexIVFPQ.h:198</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html_a9084449e216b331c5f753a10c6de6a47"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html#a9084449e216b331c5f753a10c6de6a47">faiss::AutoTuneCriterion::evaluate</a></div><div class="ttdeci">virtual double evaluate(const float *D, const idx_t *I) const =0</div></div>
<div class="ttc" id="structfaiss_1_1IndexPreTransform_html"><div class="ttname"><a href="structfaiss_1_1IndexPreTransform.html">faiss::IndexPreTransform</a></div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00251">VectorTransform.h:251</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html">faiss::IndexIDMap</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00026">MetaIndexes.h:26</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html_adcfaafb3f1b3449e2cfd553f0f603a5b"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html#adcfaafb3f1b3449e2cfd553f0f603a5b">faiss::AutoTuneCriterion::nq</a></div><div class="ttdeci">idx_t nq</div><div class="ttdoc">nb of queries this criterion is evaluated on </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00028">AutoTune.h:28</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00025">IndexIVFFlat.h:25</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_a2829e78e01cc42c3a341622947663b31"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#a2829e78e01cc42c3a341622947663b31">faiss::OperatingPoints::optimal_pts</a></div><div class="ttdeci">std::vector&lt; OperatingPoint &gt; optimal_pts</div><div class="ttdoc">optimal operating points, sorted by perf </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00098">AutoTune.h:98</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexFlatIP_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00073">IndexFlat.h:73</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html_a174f0de8e6fd01905f5fa2170f5039d8"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html#a174f0de8e6fd01905f5fa2170f5039d8">faiss::AutoTuneCriterion::set_groundtruth</a></div><div class="ttdeci">void set_groundtruth(int gt_nnn, const float *gt_D_in, const idx_t *gt_I_in)</div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00038">AutoTune.cpp:38</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_aeaa27a715fe3fceef5da18d894976833"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#aeaa27a715fe3fceef5da18d894976833">faiss::ParameterSpace::add_range</a></div><div class="ttdeci">ParameterRange &amp; add_range(const char *name)</div><div class="ttdoc">add a new parameter (or return it if it exists) </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00324">AutoTune.cpp:324</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexRefineFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexRefineFlat.html">faiss::IndexRefineFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00103">IndexFlat.h:103</a></div></div>
<div class="ttc" id="structfaiss_1_1Index2Layer_html"><div class="ttname"><a href="structfaiss_1_1Index2Layer.html">faiss::Index2Layer</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00196">IndexIVFPQ.h:196</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html_a9b3a2242729a0873d255c1684881bbd4"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html#a9b3a2242729a0873d255c1684881bbd4">faiss::AutoTuneCriterion::gt_nnn</a></div><div class="ttdeci">idx_t gt_nnn</div><div class="ttdoc">nb of GT NNs required to evaluate crterion </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00030">AutoTune.h:30</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_a84e6a4d2f595982b9d900c8585424f9b"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#a84e6a4d2f595982b9d900c8585424f9b">faiss::OperatingPoints::all_to_gnuplot</a></div><div class="ttdeci">void all_to_gnuplot(const char *fname) const </div><div class="ttdoc">output to a format easy to digest by gnuplot </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00190">AutoTune.cpp:190</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexRefineFlat_html_aaf0f6a094de0e9409effa81bedb9c7e2"><div class="ttname"><a href="structfaiss_1_1IndexRefineFlat.html#aaf0f6a094de0e9409effa81bedb9c7e2">faiss::IndexRefineFlat::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">should the base index be deallocated? </div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00110">IndexFlat.h:110</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexHNSW2Level_html"><div class="ttname"><a href="structfaiss_1_1IndexHNSW2Level.html">faiss::IndexHNSW2Level</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexHNSW_8h_source.html#l00310">IndexHNSW.h:310</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00064">Index.h:64</a></div></div>
<div class="ttc" id="structfaiss_1_1ProductQuantizer_html_aa61330eadb84772b71018b093773a5f9"><div class="ttname"><a href="structfaiss_1_1ProductQuantizer.html#aa61330eadb84772b71018b093773a5f9">faiss::ProductQuantizer::code_size</a></div><div class="ttdeci">size_t code_size</div><div class="ttdoc">byte per indexed vector </div><div class="ttdef"><b>Definition:</b> <a href="ProductQuantizer_8h_source.html#l00034">ProductQuantizer.h:34</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFPQ_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFPQ.html">faiss::IndexIVFPQ</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFPQ_8h_source.html#l00029">IndexIVFPQ.h:29</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_a1dcea762fc322fdcffe64f78994edea0"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#a1dcea762fc322fdcffe64f78994edea0">faiss::Level1Quantizer::quantizer_trains_alone</a></div><div class="ttdeci">char quantizer_trains_alone</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00041">IndexIVF.h:41</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_af6dc3b9c5631b509cbae99bf0f24170b"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#af6dc3b9c5631b509cbae99bf0f24170b">faiss::ParameterSpace::thread_over_batches</a></div><div class="ttdeci">bool thread_over_batches</div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00149">AutoTune.h:149</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_a48f457047b0511ecc531f250ef8b19c3"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#a48f457047b0511ecc531f250ef8b19c3">faiss::OperatingPoints::all_pts</a></div><div class="ttdeci">std::vector&lt; OperatingPoint &gt; all_pts</div><div class="ttdoc">all operating points </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00095">AutoTune.h:95</a></div></div>
<div class="ttc" id="namespacefaiss_html_a8dbc652ba48d41f126b8815004899448"><div class="ttname"><a href="namespacefaiss.html#a8dbc652ba48d41f126b8815004899448">faiss::ranklist_intersection_size</a></div><div class="ttdeci">size_t ranklist_intersection_size(size_t k1, const long *v1, size_t k2, const long *v2_in)</div><div class="ttdef"><b>Definition:</b> <a href="utils_8cpp_source.html#l01576">utils.cpp:1576</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_abb7097ed40b15ba0af08af6d03608f72"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#abb7097ed40b15ba0af08af6d03608f72">faiss::Level1Quantizer::cp</a></div><div class="ttdeci">ClusteringParameters cp</div><div class="ttdoc">to override default clustering params </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00044">IndexIVF.h:44</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html">faiss::AutoTuneCriterion</a></div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00026">AutoTune.h:26</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a5590d847c5c2b958affd2a05e58a6f23"><div class="ttname"><a href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">faiss::Index::verbose</a></div><div class="ttdeci">bool verbose</div><div class="ttdoc">verbosity level </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00066">Index.h:66</a></div></div>
<div class="ttc" id="namespacefaiss_html_af2a71f7d5402ae02ce169a4cc83020eb"><div class="ttname"><a href="namespacefaiss.html#af2a71f7d5402ae02ce169a4cc83020eb">faiss::getmillisecs</a></div><div class="ttdeci">double getmillisecs()</div><div class="ttdoc">ms elapsed since some arbitrary epoch </div><div class="ttdef"><b>Definition:</b> <a href="utils_8cpp_source.html#l00074">utils.cpp:74</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html_a40e91caa9232a597c16fc946d0befd9b"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html#a40e91caa9232a597c16fc946d0befd9b">faiss::AutoTuneCriterion::gt_D</a></div><div class="ttdeci">std::vector&lt; float &gt; gt_D</div><div class="ttdoc">Ground-truth distances (size nq * gt_nnn) </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00032">AutoTune.h:32</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFScalarQuantizer_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFScalarQuantizer.html">faiss::IndexIVFScalarQuantizer</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexScalarQuantizer_8h_source.html#l00146">IndexScalarQuantizer.h:146</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a7bb416dbab456bb1ecd9ace433fa5312"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a7bb416dbab456bb1ecd9ace433fa5312">faiss::ParameterSpace::combination_name</a></div><div class="ttdeci">std::string combination_name(size_t cno) const </div><div class="ttdoc">get string representation of the combination </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00279">AutoTune.cpp:279</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_aced51b1ebc33c47ab3ae15ea906559a7"><div class="ttname"><a href="structfaiss_1_1Index.html#aced51b1ebc33c47ab3ae15ea906559a7">faiss::Index::search</a></div><div class="ttdeci">virtual void search(idx_t n, const float *x, idx_t k, float *distances, idx_t *labels) const =0</div></div>
<div class="ttc" id="structfaiss_1_1MultiIndexQuantizer_html"><div class="ttname"><a href="structfaiss_1_1MultiIndexQuantizer.html">faiss::MultiIndexQuantizer</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexPQ_8h_source.html#l00135">IndexPQ.h:135</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_ab7039882ec68aabc6c52cff883f75c28"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#ab7039882ec68aabc6c52cff883f75c28">faiss::ParameterSpace::update_bounds</a></div><div class="ttdeci">void update_bounds(size_t cno, const OperatingPoint &amp;op, double *upper_bound_perf, double *lower_bound_t) const </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00541">AutoTune.cpp:541</a></div></div>
<div class="ttc" id="structfaiss_1_1VectorTransform_html"><div class="ttname"><a href="structfaiss_1_1VectorTransform.html">faiss::VectorTransform</a></div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00028">VectorTransform.h:28</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexPreTransform_html_ae5ec3f184eb211e7d6e204082b52c8c0"><div class="ttname"><a href="structfaiss_1_1IndexPreTransform.html#ae5ec3f184eb211e7d6e204082b52c8c0">faiss::IndexPreTransform::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">! the sub-index </div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00256">VectorTransform.h:256</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a9304975f379738eda384385eace8ad76"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a9304975f379738eda384385eace8ad76">faiss::ParameterSpace::initialize</a></div><div class="ttdeci">virtual void initialize(const Index *index)</div><div class="ttdoc">initialize with reasonable parameters for the index </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00338">AutoTune.cpp:338</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a7a9f2292c4e0ac3aad569434edea87b0"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a7a9f2292c4e0ac3aad569434edea87b0">faiss::ParameterSpace::verbose</a></div><div class="ttdeci">int verbose</div><div class="ttdoc">verbosity during exploration </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00139">AutoTune.h:139</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexHNSWPQ_html"><div class="ttname"><a href="structfaiss_1_1IndexHNSWPQ.html">faiss::IndexHNSWPQ</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexHNSW_8h_source.html#l00292">IndexHNSW.h:292</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoints_html_a84baddccd8b803dee460739f8bcbc0c9"><div class="ttname"><a href="structfaiss_1_1OperatingPoints.html#a84baddccd8b803dee460739f8bcbc0c9">faiss::OperatingPoints::merge_with</a></div><div class="ttdeci">int merge_with(const OperatingPoints &amp;other, const std::string &amp;prefix=&quot;&quot;)</div><div class="ttdoc">add operating points from other to this, with a prefix to the keys </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00161">AutoTune.cpp:161</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_ac630c153ffd12f9994452c92fe57dc17"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#ac630c153ffd12f9994452c92fe57dc17">faiss::ParameterSpace::set_index_parameter</a></div><div class="ttdeci">virtual void set_index_parameter(Index *index, const std::string &amp;name, double val) const </div><div class="ttdoc">set one of the parameters </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00444">AutoTune.cpp:444</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a488329e3c1f08b9980d8e0f9c1491c75"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a488329e3c1f08b9980d8e0f9c1491c75">faiss::ParameterSpace::n_combinations</a></div><div class="ttdeci">size_t n_combinations() const </div><div class="ttdoc">nb of combinations, = product of values sizes </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00270">AutoTune.cpp:270</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a8e18f641854b2bde83ecff0a2f9a6f4e"><div class="ttname"><a href="structfaiss_1_1Index.html#a8e18f641854b2bde83ecff0a2f9a6f4e">faiss::Index::metric_type</a></div><div class="ttdeci">MetricType metric_type</div><div class="ttdoc">type of metric this index uses for search </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00072">Index.h:72</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a55783994cee46e9181bad2b3a7a973f4"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a55783994cee46e9181bad2b3a7a973f4">faiss::ParameterSpace::set_index_parameters</a></div><div class="ttdeci">void set_index_parameters(Index *index, size_t cno) const </div><div class="ttdoc">set a combination of parameters on an index </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00411">AutoTune.cpp:411</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexHNSWFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexHNSWFlat.html">faiss::IndexHNSWFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexHNSW_8h_source.html#l00283">IndexHNSW.h:283</a></div></div>
<div class="ttc" id="structfaiss_1_1ScalarQuantizer_html_a1201dbd1611fa5c10782ade5d0e4952ea1650389e3efa052ff60177d502328a2c"><div class="ttname"><a href="structfaiss_1_1ScalarQuantizer.html#a1201dbd1611fa5c10782ade5d0e4952ea1650389e3efa052ff60177d502328a2c">faiss::ScalarQuantizer::QT_8bit</a></div><div class="ttdoc">8 bits per component </div><div class="ttdef"><b>Definition:</b> <a href="IndexScalarQuantizer_8h_source.html#l00033">IndexScalarQuantizer.h:33</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00060">Index.h:60</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a"><div class="ttname"><a href="structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42fea00f77a4f8209c30c3ef37ccfd3d0c10a">faiss::IndexPQ::ST_PQ</a></div><div class="ttdoc">asymmetric product quantizer (default) </div><div class="ttdef"><b>Definition:</b> <a href="IndexPQ_8h_source.html#l00076">IndexPQ.h:76</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_aa4bb1f0008689903aa936baee61d09d0"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#aa4bb1f0008689903aa936baee61d09d0">faiss::ParameterSpace::display</a></div><div class="ttdeci">void display() const </div><div class="ttdoc">print a description on stdout </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00523">AutoTune.cpp:523</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexPQ_html_a4fa05430935a02b62b7c15c9840c42feaf06a0e6b53f9cbe1c791c6912169b738"><div class="ttname"><a href="structfaiss_1_1IndexPQ.html#a4fa05430935a02b62b7c15c9840c42feaf06a0e6b53f9cbe1c791c6912169b738">faiss::IndexPQ::ST_polysemous</a></div><div class="ttdoc">HE filter (using ht) + PQ combination. </div><div class="ttdef"><b>Definition:</b> <a href="IndexPQ_8h_source.html#l00080">IndexPQ.h:80</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexShards_html"><div class="ttname"><a href="structfaiss_1_1IndexShards.html">faiss::IndexShards</a></div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00086">MetaIndexes.h:86</a></div></div>
<div class="ttc" id="structfaiss_1_1ProductQuantizer_html"><div class="ttname"><a href="structfaiss_1_1ProductQuantizer.html">faiss::ProductQuantizer</a></div><div class="ttdef"><b>Definition:</b> <a href="ProductQuantizer_8h_source.html#l00025">ProductQuantizer.h:25</a></div></div>
<div class="ttc" id="structfaiss_1_1NormalizationTransform_html"><div class="ttname"><a href="structfaiss_1_1NormalizationTransform.html">faiss::NormalizationTransform</a></div><div class="ttdef"><b>Definition:</b> <a href="VectorTransform_8h_source.html#l00235">VectorTransform.h:235</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a7cdedaf4bab33293771c4267d453a950"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a7cdedaf4bab33293771c4267d453a950">faiss::ParameterSpace::combination_ge</a></div><div class="ttdeci">bool combination_ge(size_t c1, size_t c2) const </div><div class="ttdoc">returns whether combinations c1 &amp;gt;= c2 in the tuple sense </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00294">AutoTune.cpp:294</a></div></div>
<div class="ttc" id="structfaiss_1_1ClusteringParameters_html_ad997fb511f574f7ddc69938c21612f8d"><div class="ttname"><a href="structfaiss_1_1ClusteringParameters.html#ad997fb511f574f7ddc69938c21612f8d">faiss::ClusteringParameters::spherical</a></div><div class="ttdeci">bool spherical</div><div class="ttdoc">do we want normalized centroids? </div><div class="ttdef"><b>Definition:</b> <a href="Clustering_8h_source.html#l00029">Clustering.h:29</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_ab688c629cd42122d73517078b87f483d"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#ab688c629cd42122d73517078b87f483d">faiss::Level1Quantizer::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">whether object owns the quantizer </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00042">IndexIVF.h:42</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterRange_html"><div class="ttname"><a href="structfaiss_1_1ParameterRange.html">faiss::ParameterRange</a></div><div class="ttdoc">possible values of a parameter, sorted from least to most expensive/accurate </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00125">AutoTune.h:125</a></div></div>
<div class="ttc" id="namespacefaiss_html_a0c95ec47726f2ce3fb668dcb1f9a3317"><div class="ttname"><a href="namespacefaiss.html#a0c95ec47726f2ce3fb668dcb1f9a3317">faiss::index_factory</a></div><div class="ttdeci">Index * index_factory(int d, const char *description_in, MetricType metric)</div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8cpp_source.html#l00688">AutoTune.cpp:688</a></div></div>
<div class="ttc" id="structfaiss_1_1ParameterSpace_html_a76aeae25b3269fb24a26194fbe013b86"><div class="ttname"><a href="structfaiss_1_1ParameterSpace.html#a76aeae25b3269fb24a26194fbe013b86">faiss::ParameterSpace::n_experiments</a></div><div class="ttdeci">int n_experiments</div><div class="ttdoc">nb of experiments during optimization (0 = try all combinations) </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00142">AutoTune.h:142</a></div></div>
<div class="ttc" id="structfaiss_1_1AutoTuneCriterion_html_af915fc4df215e3c8d9f71ff42d526144"><div class="ttname"><a href="structfaiss_1_1AutoTuneCriterion.html#af915fc4df215e3c8d9f71ff42d526144">faiss::AutoTuneCriterion::gt_I</a></div><div class="ttdeci">std::vector&lt; idx_t &gt; gt_I</div><div class="ttdoc">Ground-truth indexes (size nq * gt_nnn) </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00033">AutoTune.h:33</a></div></div>
<div class="ttc" id="structfaiss_1_1OperatingPoint_html_a886492ffe2b337539fadc798c8f4a6a8"><div class="ttname"><a href="structfaiss_1_1OperatingPoint.html#a886492ffe2b337539fadc798c8f4a6a8">faiss::OperatingPoint::t</a></div><div class="ttdeci">double t</div><div class="ttdoc">corresponding execution time (ms) </div><div class="ttdef"><b>Definition:</b> <a href="AutoTune_8h_source.html#l00088">AutoTune.h:88</a></div></div>
<div class="ttc" id="namespacefaiss_html_afd12191c638da74760ff397cf319752c"><div class="ttname"><a href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a></div><div class="ttdeci">MetricType</div><div class="ttdoc">Some algorithms support both an inner product version and a L2 search version. </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00043">Index.h:43</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIDMap_html_affa8a764304410c96489c2b2e178bcdb"><div class="ttname"><a href="structfaiss_1_1IndexIDMap.html#affa8a764304410c96489c2b2e178bcdb">faiss::IndexIDMap::own_fields</a></div><div class="ttdeci">bool own_fields</div><div class="ttdoc">! the sub-index </div><div class="ttdef"><b>Definition:</b> <a href="MetaIndexes_8h_source.html#l00028">MetaIndexes.h:28</a></div></div>
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